Specifications
| Attribute | Value |
| Package / Case | Tube,Tube |
| Part Status | Obsolete |
| Amplifier Type | J-FET |
| Number of Circuits | 1 |
| Output Type | Rail-to-Rail |
| Slew Rate | 3V/µs |
| Gain Bandwidth Product | 1.8 MHz |
| -3 dB Bandwidth | 1.9 MHz |
| Current - Input Bias | 2 pA |
| Voltage - Input Offset | 300 µV |
| Supply Current | 700µA |
| Current - Output / Channel | 20 mA |
| Voltage - Supply Span(Min) | 5 V |
| Voltage - Supply Span(Max) | 36 V |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Surface Mount |
Overview
Description
The AD820BR is a precision instrumentation amplifier produced by Analog Devices, designed primarily for sensor signal conditioning. It features a high common-mode rejection ratio (CMRR) and low offset voltage, making it ideal for applications requiring accurate, low-level signal amplification in the presence of high common-mode voltages. The device operates with a single or dual power supply and is known for its low power consumption.
Key specifications include a gain range from 1 to 1000, set by external resistors, ensuring flexibility in various applications. The AD820BR offers excellent linearity and bandwidth, suitable for precision data acquisition systems. Its input protection and low input bias current enhance reliability and performance in harsh environments.
The amplifier is packaged in a standard 8-pin SOIC, facilitating easy integration into circuit designs. It's commonly used in industrial and instrumentation applications, such as strain gauge amplifiers, thermocouple amplifiers, and other precision measurement systems. Its robust performance and adaptability make it a popular choice for engineers seeking reliable signal amplification.
Key specifications include a gain range from 1 to 1000, set by external resistors, ensuring flexibility in various applications. The AD820BR offers excellent linearity and bandwidth, suitable for precision data acquisition systems. Its input protection and low input bias current enhance reliability and performance in harsh environments.
The amplifier is packaged in a standard 8-pin SOIC, facilitating easy integration into circuit designs. It's commonly used in industrial and instrumentation applications, such as strain gauge amplifiers, thermocouple amplifiers, and other precision measurement systems. Its robust performance and adaptability make it a popular choice for engineers seeking reliable signal amplification.
Equivalent
The AD820BR is a precision operational amplifier. Some equivalent products you could consider are:
1. LM741 - A classic general-purpose operational amplifier.
2. TL081 - A JFET-input operational amplifier with similar characteristics.
3. LT1001 - Known for its precision and low input offset voltage.
4. OP07 - Features low offset voltage and low drift.
5. OPA177 - Offers precision with low offset and low drift.
It's important to verify the specific requirements of your application to ensure compatibility with these alternatives.
1. LM741 - A classic general-purpose operational amplifier.
2. TL081 - A JFET-input operational amplifier with similar characteristics.
3. LT1001 - Known for its precision and low input offset voltage.
4. OP07 - Features low offset voltage and low drift.
5. OPA177 - Offers precision with low offset and low drift.
It's important to verify the specific requirements of your application to ensure compatibility with these alternatives.
Features
The AD820BR is a high-precision instrumentation amplifier designed for various applications requiring signal conditioning. Key features include:
1. High Accuracy: It offers excellent precision with low offset voltage and high Common-Mode Rejection Ratio (CMRR), making it suitable for accurate measurements.
2. Low Power Consumption: Designed to operate with a low quiescent current, making it energy-efficient for battery-powered applications.
3. Wide Operating Voltage Range: Supports a wide supply voltage range, enhancing its versatility in different circuit designs.
4. Temperature Stability: Maintains performance across a broad temperature range, ensuring reliability in varying environmental conditions.
5. Small Package: Available in a compact package, which is ideal for space-constrained applications.
6. High Input Impedance: Ensures minimal loading on the signal source, preserving signal integrity.
7. Rail-to-Rail Output: Provides a wide output voltage swing, useful for maximizing the dynamic range in low voltage systems.
These features make the AD820BR suitable for applications such as sensor signal conditioning, medical instrumentation, and data acquisition systems.
1. High Accuracy: It offers excellent precision with low offset voltage and high Common-Mode Rejection Ratio (CMRR), making it suitable for accurate measurements.
2. Low Power Consumption: Designed to operate with a low quiescent current, making it energy-efficient for battery-powered applications.
3. Wide Operating Voltage Range: Supports a wide supply voltage range, enhancing its versatility in different circuit designs.
4. Temperature Stability: Maintains performance across a broad temperature range, ensuring reliability in varying environmental conditions.
5. Small Package: Available in a compact package, which is ideal for space-constrained applications.
6. High Input Impedance: Ensures minimal loading on the signal source, preserving signal integrity.
7. Rail-to-Rail Output: Provides a wide output voltage swing, useful for maximizing the dynamic range in low voltage systems.
These features make the AD820BR suitable for applications such as sensor signal conditioning, medical instrumentation, and data acquisition systems.
Pinout
The AD820BR is an operational amplifier from Analog Devices. It typically comes in an 8-pin SOIC (Small Outline Integrated Circuit) package. Here is a concise description of its pin functions:
1. Pin 1 (Offset Null/V+ Offset Trim): Used for offset nulling or voltage offset adjustment.
2. Pin 2 (Inverting Input): The inverting input terminal of the op-amp.
3. Pin 3 (Non-Inverting Input): The non-inverting input terminal of the op-amp.
4. Pin 4 (V-): The negative power supply terminal.
5. Pin 5 (Offset Null/V- Offset Trim): Used for offset nulling or voltage offset adjustment.
6. Pin 6 (Output): The output terminal of the op-amp.
7. Pin 7 (V+): The positive power supply terminal.
8. Pin 8 (No Connection): Typically not connected to any internal circuitry.
The AD820BR is designed for precision applications, offering low offset voltage and low input bias current, making it suitable for various analog signal processing tasks.
1. Pin 1 (Offset Null/V+ Offset Trim): Used for offset nulling or voltage offset adjustment.
2. Pin 2 (Inverting Input): The inverting input terminal of the op-amp.
3. Pin 3 (Non-Inverting Input): The non-inverting input terminal of the op-amp.
4. Pin 4 (V-): The negative power supply terminal.
5. Pin 5 (Offset Null/V- Offset Trim): Used for offset nulling or voltage offset adjustment.
6. Pin 6 (Output): The output terminal of the op-amp.
7. Pin 7 (V+): The positive power supply terminal.
8. Pin 8 (No Connection): Typically not connected to any internal circuitry.
The AD820BR is designed for precision applications, offering low offset voltage and low input bias current, making it suitable for various analog signal processing tasks.
Manufacturer
The AD820BR is manufactured by Analog Devices, Inc. Analog Devices is a multinational semiconductor company that specializes in the design and manufacturing of analog, mixed-signal, and digital signal processing (DSP) integrated circuits. The company serves various industries, including industrial, automotive, communications, healthcare, and consumer electronics, providing solutions for a wide range of applications such as data conversion, signal processing, power management, and wireless communication. Analog Devices is known for its focus on innovation and quality, offering high-performance products that address complex technical challenges in electronics.
Application
The AD820BR is a precision, low-power instrumentation amplifier used in various applications. Key areas include:
1. Medical Instrumentation: For precise physiological signal amplification.
2. Industrial Process Controls: Monitoring and controlling industrial parameters.
3. Data Acquisition Systems: Capturing and processing signals accurately.
4. Weigh Scales: Amplifying low-level signals from load cells.
5. Strain Gauge Amplifiers: For stress and strain measurements.
6. Thermocouple Amplifiers: Accurate temperature measurement and conversion.
7. Transducer Interfaces: Connecting sensors to digital systems.
8. Battery-Operated Devices: Benefiting from its low power consumption.
These applications leverage the AD820BR’s high input impedance, low offset voltage, and excellent CMRR for precision measurements.
1. Medical Instrumentation: For precise physiological signal amplification.
2. Industrial Process Controls: Monitoring and controlling industrial parameters.
3. Data Acquisition Systems: Capturing and processing signals accurately.
4. Weigh Scales: Amplifying low-level signals from load cells.
5. Strain Gauge Amplifiers: For stress and strain measurements.
6. Thermocouple Amplifiers: Accurate temperature measurement and conversion.
7. Transducer Interfaces: Connecting sensors to digital systems.
8. Battery-Operated Devices: Benefiting from its low power consumption.
These applications leverage the AD820BR’s high input impedance, low offset voltage, and excellent CMRR for precision measurements.
Package
The AD820BR is an operational amplifier from Analog Devices, and it typically comes in an SOIC-8 (Small Outline Integrated Circuit) package.
